Checking Coolant Level
Example:
1 Coolant reservoir cap
2 Marking for coolant level
The coolant level can be checked
visually at the transparent coolant
reservoir.
To check the coolant level, the
vehicle must be parked on level
ground.
The coolant level must reach:
The marking (2, arrow) on the
reservoir when the engine is cold.
Approx. 0.6 in (1.5 cm) higher
when the engine is at operating
temperature.
Adding Coolant
If coolant has to be added, a
50/50 mixture of water and MB
anticorrosion/antifreeze should be
used.
The drain plugs for the cooling
system are located on the right-
hand side of the engine block and
at the bottom of the radiator.
Anticorrosion/antifreeze, see
Coolants in Index.
Warning!
• Use extreme caution when
opening the hood if there
are any signs of steam or
coolant leaking from the
cooling system.
• Do not remove pressure cap
on coolant reservoir if en
gine temperature is above
194°F (90°C). Allow engine
to cool down before re
moving cap. The coolant
reservoir contains hot fluid
and is under pressure.
• Using a rag, turn cap to first
notch to relieve excess
pressure. If opened imme
diately, scalding hot fluid
and steam will be blown out
under pressure, possibly
causing personal injury.
• Do not spill antifreeze on
hot engine parts. Anti
freeze contains ethylene
glycol which may burn if it
comes into contact with hot
engine parts. You can be
seriously burned.
81
Practical Hints
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